Yes, each phone strap/ lanyard comes with 1 strap card.
For Phone Straps compatibility, please see the product descriptions on the website:
https://www.casetify.com/product/cross-body-strap
Rest assured that our phone cases are designed to fit well for the phones. Strap card is an additional accessory to be used together with phone cases. It is normal that the strap card may lift up a little when charging but this should not affect the usage and functionality of our phone cases.
We would recommend not to insert any cards/objects when you are using the phone straps with card, to ensure perfect and easy fitting and alignment of the product with our phone cases.